/**
 * File: C:\xampp\htdocs\charapp\assets\css\index.css
 * 
 * Purpose:
 * - Index/Startseite Group Cards (Banner + Logo + Collapsible Details)
 * - Group Grid Layout
 * - Timeline Mini Preview
 * 
 * Dependencies:
 * - app.css (CSS variables)
 * 
 * Load Order: 9
 */

/* =========================
   Index: Group Cards (Banner + centered logo + collapsible)
   ========================= */
.group-grid{
  display:grid;
  grid-template-columns: repeat(1, minmax(0,1fr));
  gap: 12px;
}
@media(min-width: 860px){
  .group-grid{ grid-template-columns: repeat(2, minmax(0,1fr)); }
}

.group-card{
  border:1px solid rgba(255,255,255,.12);
  border-radius: 16px;
  overflow:hidden;
  background: rgba(255,255,255,.02);
  box-shadow: 0 6px 18px rgba(0,0,0,.25);
  transition: all 0.2s ease;
}

.group-card:hover{
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(0,0,0,.35);
  border-color: rgba(93,214,201,0.3);
}

.group-card__hero{
  position:relative;
  height: 160px;
  overflow:hidden;
}

.group-card__hero .banner{
  width:100%;
  height:100%;
  object-fit:cover;
  display:block;
}

.group-card__hero .overlay{
  position:absolute;
  inset:0;
  background:linear-gradient(to bottom, rgba(0,0,0,.1), rgba(0,0,0,.65));
}

.group-card__hero .title{
  position:absolute;
  left:1rem;
  right:1rem;
  bottom:1rem;
  font-size:1.25rem;
  font-weight:900;
  color:#fff;
  text-shadow:0 2px 8px rgba(0,0,0,.5);
}

.group-card__hero .subtitle{
  position:absolute;
  left:1rem;
  right:1rem;
  bottom:3.2rem;
  font-size:0.875rem;
  color:rgba(255,255,255,.85);
  text-shadow:0 1px 4px rgba(0,0,0,.5);
}

.group-card__logo{
  position:absolute;
  bottom:-1rem;
  left:50%;
  transform:translateX(-50%);
  width:64px;
  height:64px;
  border-radius:12px;
  object-fit:cover;
  border:3px solid rgba(255,255,255,.7);
  box-shadow:0 4px 12px rgba(0,0,0,.35);
}

.group-card__body{
  padding:1.5rem 1rem 1rem;
}

.group-card__actions{
  display:flex;
  flex-direction:column;
  gap:0.75rem;
}

.group-card__open{
  display:block;
  text-align:center;
  padding:0.75rem;
  background:rgba(93,214,201,.16);
  border:1px solid rgba(93,214,201,.35);
  border-radius:12px;
  color:var(--text);
  text-decoration:none;
  font-weight:700;
  transition:all 0.2s ease;
}

.group-card__open:hover{
  background:rgba(93,214,201,.25);
  transform:translateY(-1px);
}

.group-card__actions details{
  border-top:1px solid rgba(255,255,255,.08);
  padding-top:0.75rem;
}

.group-card__actions summary{
  cursor:pointer;
  display:flex;
  justify-content:space-between;
  align-items:center;
  padding:0.5rem;
  border-radius:8px;
  transition:background 0.2s ease;
}

.group-card__actions summary:hover{
  background:rgba(255,255,255,.04);
}

.group-card__actions .details{
  margin-top:0.75rem;
  padding:0.75rem;
  background:rgba(255,255,255,.02);
  border-radius:8px;
  font-size:0.9rem;
  line-height:1.5;
}

.group-card__actions .details .small{
  font-size:0.75rem;
  font-weight:700;
  text-transform:uppercase;
  opacity:0.7;
  margin-top:0.75rem;
  margin-bottom:0.25rem;
}

/* =========================
   Timeline Mini Preview
   ========================= */
.timeline-mini{
  display:flex;
  flex-direction:column;
  gap:0.5rem;
  margin-top:0.5rem;
}

.timeline-mini .ev{
  padding:0.5rem;
  background:rgba(255,255,255,.02);
  border-left:3px solid rgba(93,214,201,.5);
  border-radius:6px;
}

.timeline-mini .when{
  font-size:0.75rem;
  opacity:0.7;
  margin-bottom:0.15rem;
}

.timeline-mini .what{
  font-size:0.85rem;
  font-weight:700;
}